Equilibrium and kinetic studies of the adsorption of antibiotics from aqueous solutions onto powdered zeolites

Detalhes bibliográficos
Autor(a) principal: de Sousa, Diana Nara Ribeiro
Data de Publicação: 2018
Outros Autores: Insa, Sara, Mozeto, Antonio Aparecido, Petrovic, Mira, Chaves, Thiago Faheina [UNESP], Fadini, Pedro Sergio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.chemosphere.2018.04.085
http://hdl.handle.net/11449/171037
Resumo: The performances of two FAU-type zeolites with different SiO2/Al2O3 ratios were evaluated for the removal of antibiotics of three different classes, namely azithromycin, ofloxacin, and sulfamethoxazole, from aqueous solutions. Commercial zeolites were used, without any previous treatment. Use of a small adsorbent dosage resulted in fast antibiotic adsorption that followed pseudo-second order kinetics. The removals of azithromycin and sulfamethoxazole were highly pH-dependent, with low removal percentages observed under acid (pH 2.5–4.5) and basic (pH 8.5–10.5) conditions, respectively. The Freundlich isotherm model provided the best fits to the adsorption data. The adsorption mechanisms appeared to involve both electrostatic and H-bonding interactions. Using an antibiotics mixture, percentage removals of azithromycin and ofloxacin onto the zeolites of up to 79% were obtained. Both materials presented good adsorption (>50%) of azithromycin and ofloxacin from a real sample of effluent wastewater. The results showed that zeolites with FAU structure can be used as effective adsorbents for the removal of antibiotics with different physicochemical properties, including molecules with large volumes, such as azithromycin.
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spelling Equilibrium and kinetic studies of the adsorption of antibiotics from aqueous solutions onto powdered zeolitesAntibioticsEffective removalFast adsorptionZeoliteThe performances of two FAU-type zeolites with different SiO2/Al2O3 ratios were evaluated for the removal of antibiotics of three different classes, namely azithromycin, ofloxacin, and sulfamethoxazole, from aqueous solutions. Commercial zeolites were used, without any previous treatment. Use of a small adsorbent dosage resulted in fast antibiotic adsorption that followed pseudo-second order kinetics. The removals of azithromycin and sulfamethoxazole were highly pH-dependent, with low removal percentages observed under acid (pH 2.5–4.5) and basic (pH 8.5–10.5) conditions, respectively. The Freundlich isotherm model provided the best fits to the adsorption data. The adsorption mechanisms appeared to involve both electrostatic and H-bonding interactions. Using an antibiotics mixture, percentage removals of azithromycin and ofloxacin onto the zeolites of up to 79% were obtained. Both materials presented good adsorption (>50%) of azithromycin and ofloxacin from a real sample of effluent wastewater. The results showed that zeolites with FAU structure can be used as effective adsorbents for the removal of antibiotics with different physicochemical properties, including molecules with large volumes, such as azithromycin.Generalitat de CatalunyaLaboratório de Biogeoquímica Ambiental (LBGqA) Departamento de Química Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luís, km 235Catalan Institute for Water Research (ICRA) Scientific and Technological Park of the University of Girona, H2O Building, Emili Grahit 101Catalan Institution for Research and Advanced Studies (ICREA), Passeig de Lluís Companys 23Instituto de Química UNESP-Univ. Estadual Paulista, Rua Prof. Francisco Degni 55Instituto de Química UNESP-Univ. Estadual Paulista, Rua Prof. Francisco Degni 55Generalitat de Catalunya: ICRA 2014 SGR 291Universidade Federal de São Carlos (UFSCar)Scientific and Technological Park of the University of GironaCatalan Institution for Research and Advanced Studies (ICREA)Universidade Estadual Paulista (Unesp)de Sousa, Diana Nara RibeiroInsa, SaraMozeto, Antonio AparecidoPetrovic, MiraChaves, Thiago Faheina [UNESP]Fadini, Pedro Sergio2018-12-11T16:53:28Z2018-12-11T16:53:28Z2018-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article137-146application/pdfhttp://dx.doi.org/10.1016/j.chemosphere.2018.04.085Chemosphere, v. 205, p. 137-146.1879-12980045-6535http://hdl.handle.net/11449/17103710.1016/j.chemosphere.2018.04.0852-s2.0-850474765162-s2.0-85047476516.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengChemosphere1,435info:eu-repo/semantics/openAccess2023-11-18T06:14:22Zoai:repositorio.unesp.br:11449/171037Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:04:34.460025Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Equilibrium and kinetic studies of the adsorption of antibiotics from aqueous solutions onto powdered zeolites
title Equilibrium and kinetic studies of the adsorption of antibiotics from aqueous solutions onto powdered zeolites
spellingShingle Equilibrium and kinetic studies of the adsorption of antibiotics from aqueous solutions onto powdered zeolites
de Sousa, Diana Nara Ribeiro
Antibiotics
Effective removal
Fast adsorption
Zeolite
title_short Equilibrium and kinetic studies of the adsorption of antibiotics from aqueous solutions onto powdered zeolites
title_full Equilibrium and kinetic studies of the adsorption of antibiotics from aqueous solutions onto powdered zeolites
title_fullStr Equilibrium and kinetic studies of the adsorption of antibiotics from aqueous solutions onto powdered zeolites
title_full_unstemmed Equilibrium and kinetic studies of the adsorption of antibiotics from aqueous solutions onto powdered zeolites
title_sort Equilibrium and kinetic studies of the adsorption of antibiotics from aqueous solutions onto powdered zeolites
author de Sousa, Diana Nara Ribeiro
author_facet de Sousa, Diana Nara Ribeiro
Insa, Sara
Mozeto, Antonio Aparecido
Petrovic, Mira
Chaves, Thiago Faheina [UNESP]
Fadini, Pedro Sergio
author_role author
author2 Insa, Sara
Mozeto, Antonio Aparecido
Petrovic, Mira
Chaves, Thiago Faheina [UNESP]
Fadini, Pedro Sergio
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Federal de São Carlos (UFSCar)
Scientific and Technological Park of the University of Girona
Catalan Institution for Research and Advanced Studies (ICREA)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv de Sousa, Diana Nara Ribeiro
Insa, Sara
Mozeto, Antonio Aparecido
Petrovic, Mira
Chaves, Thiago Faheina [UNESP]
Fadini, Pedro Sergio
dc.subject.por.fl_str_mv Antibiotics
Effective removal
Fast adsorption
Zeolite
topic Antibiotics
Effective removal
Fast adsorption
Zeolite
description The performances of two FAU-type zeolites with different SiO2/Al2O3 ratios were evaluated for the removal of antibiotics of three different classes, namely azithromycin, ofloxacin, and sulfamethoxazole, from aqueous solutions. Commercial zeolites were used, without any previous treatment. Use of a small adsorbent dosage resulted in fast antibiotic adsorption that followed pseudo-second order kinetics. The removals of azithromycin and sulfamethoxazole were highly pH-dependent, with low removal percentages observed under acid (pH 2.5–4.5) and basic (pH 8.5–10.5) conditions, respectively. The Freundlich isotherm model provided the best fits to the adsorption data. The adsorption mechanisms appeared to involve both electrostatic and H-bonding interactions. Using an antibiotics mixture, percentage removals of azithromycin and ofloxacin onto the zeolites of up to 79% were obtained. Both materials presented good adsorption (>50%) of azithromycin and ofloxacin from a real sample of effluent wastewater. The results showed that zeolites with FAU structure can be used as effective adsorbents for the removal of antibiotics with different physicochemical properties, including molecules with large volumes, such as azithromycin.
publishDate 2018
dc.date.none.fl_str_mv 2018-12-11T16:53:28Z
2018-12-11T16:53:28Z
2018-08-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.chemosphere.2018.04.085
Chemosphere, v. 205, p. 137-146.
1879-1298
0045-6535
http://hdl.handle.net/11449/171037
10.1016/j.chemosphere.2018.04.085
2-s2.0-85047476516
2-s2.0-85047476516.pdf
url http://dx.doi.org/10.1016/j.chemosphere.2018.04.085
http://hdl.handle.net/11449/171037
identifier_str_mv Chemosphere, v. 205, p. 137-146.
1879-1298
0045-6535
10.1016/j.chemosphere.2018.04.085
2-s2.0-85047476516
2-s2.0-85047476516.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Chemosphere
1,435
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 137-146
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128890047037440

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